Riveting-machine



- in; new. i

n HIVETIHG MACHINE- No. 289,369. 1 Patented Dec. 4, 1883.

UNITED; STATES PATENT OFFICE.

JO'HX F. ALLEX, or'nnooKL1iw, .\"Ew roan. I

River] n G.-

MACHINE.

SPECIFICATION forming part of Letters 2mm No. 289,369, dated December 4,1883.

7 Application and February 13, teen, mo model).

To all whom it may concern:

Be it; known that I, JGHS F. ALLEN, a citizen of the United States. and a resident of Brooklyn, in the State of New York, have invented a new and useful Improvement in Rivcting Machines, likewise applicable for punching and shearing metal plates, of which the following is a specification.

This invention is an improvementof the Letters Patent No. 229.795, granted to me on the 13th day of July, 1880; and the object of my invention is to produce a portablemachine for riveting, punching, and shearing metal plates, whereby a greater reach can be obtained than is practicable in the abovement ioned invention; and, further. to obtain the action of the dies square to each other, which particular, when the machine is arranged for punching holes, is ofthe utmost consequence.

In the accompanying drawings, Figure I represents a front-view of a rivetinganachine embodying my invention. Fig. II is an end view of the same. Fig. III is airo-nt view of a rivetinganachine, showing same n1odifications, and Fig. 1V is an end view of the same.

Similar letters represent similar parts in all the figures.

A is a frame made in the shape ot'the letter C, to the lower branch or arm of which the lower die, D, is attached. The upper branch orarni of said frame is provided with a suitable hub, B, in \\'lll(i1 tl plunger, E, works freely, to the lower partotwhich the upper die, D, is attached. To the after part of the frame A a cylinder, G, is attached, of the truukf pattern. with the usual 'valve to admit and exhaust. the pressureto be cmploycd, for which latter I prefer compressed air, although steam or water may be used for the purpose. The pressure is admitted through the pipe g. The pistonrod 1 is attached near the line of the piston, inside the trunk, in the usual manner of that styleof engincs.

RR are two rods turning on fixed centers n a. attached at the sides of t-hehub B, Figs. 1 and II, the outer ends of which rods are attached to the cross-pin L, arranged at the end of the piston-rod P. i

T is a rod, shorter than the rods R R, the lower end of which is attached to the plunger E by means ofa suitablejoint-pin, a, and the upper end of said rod T is connected to the cross-pin L of the piston-rod.

\Vhen the machine is in the position represented in Fig. I, and pressure is admitted hehind the piston, the pin L will more in the are of the circle described by the rods R R, as the lower (ads f said rods turn on fixed centers 12 n, and will home, at the end of the stroke 'of the piston, to the point L.

During this operation, the rod T being attach-ed at its upper end to this cross-pin L, the lower end of said rod T will be moved downward, moving thereby the plunger E downward, and thus thereby a concentric head. Ily this arrange 'meut I obtain depth of throat orreach and width of grip, directness of stroke, insuring symmetry of rivet-heads, very great power to 1 enable perfectrivetiug to be done in heavy work, and great-lightness, to make the machine easily movable, the weight of the complete machine not executing nine hundred pounds,

while a ten-inch cylinder with sixty pounds of pressure will produce a pressure on the rivets of t'routfifty to sixty tons.

'When the machine is to be used for punch ingorshearing, suitabletools foreither of these purposes must be substituted in place of the dies D and D. The machines are suspended from the fork or rods .7, so situated as to balance the same. I

What I claim as my invention, and desire to on secure by Letters Patent, isi Ina"rivetingauachiue, the combination of thejawframe A, pressure-(3'1iuder G, pistonrod 1, rods R R and T, of ditierentlengths,

with plunger E and dies D I), all arrangeduto operate-Ysu-bst'antially iu the manner and for .the purpose described.

JOXIX F. ALLEN. f 

